Billionaire Mill Owner Rinat Akhmetov Calls for Volatile East to Remain Part of Ukraine

MOSCOW—Steelworkers from the mills of Ukraine's richest man are helping to bring order to the streets of Mariupol in eastern Ukraine, which one week ago saw deadly clashes between armed separatists and government forces.

The initiative followed a rare public intervention by the owner of their mills, Rinat Akhmetov, who in a video address called for the country's volatile eastern regions to remain part of Ukraine.